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https://issues.apache.org/jira/browse/PHOENIX-1580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14386062#comment-14386062
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Alicia Ying Shu commented on PHOENIX-1580:
------------------------------------------
[~jamestaylor], [~maryannxue]: Uploaded a patch for UnionAll after
incorporating grammar changes. The modifications include:
1. Removed the isUnion boolean from SelectStatement constructor.
2. Throw a new SQLException if UNION is done inside of a subquery.
3. Add more tests - test bind variables within the sub selects; Union all in
subqueries.
4. I did not get MergeSortTopNResultIterator work so still used
OrderedResultIterator if there's an ORDER BY in UnionPlan. Please take a look
of this.
5. Tested partial implementation of PHOENIX-1749 for order by by positions. It
worked for Union all. It is a separate issue. I will work on that shortly after
Union all.
Thanks.
> Support UNION ALL
> -----------------
>
> Key: PHOENIX-1580
> URL: https://issues.apache.org/jira/browse/PHOENIX-1580
> Project: Phoenix
> Issue Type: Bug
> Reporter: Alicia Ying Shu
> Assignee: Alicia Ying Shu
> Attachments: PHOENIX-1580-grammar.patch, Phoenix-1580-v1.patch,
> phoenix-1580-v1-wipe.patch, phoenix-1580.patch, unionall-wipe.patch
>
>
> Select * from T1
> UNION ALL
> Select * from T2
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